MintSync

Password Synchronisation Server & Browser Clients Extensions

MintSync ======== Eventually, this will be a multi-browser extension and server component secure password storage solution with all data decrypted clientside only. Currently, a working Server (with client UI) and a Chromium extension exist (see the relevent branches). ================================ Standard Installation - Server ================================ Please see the ServerUI Branch for instructions and the Server Component. ================================================== Frequently Asked Questions/Questions I Would Ask ================================================== * Q: What the hell is this? * A: It’s a client and server application designed to store passwords securely for websites. Data is kept encrypted server-side and only ever decrypted by the client. * Q: What ciphers/hashes are used and how large are your keys? * A: Currently the only supported Cipher is AES and the only supported keylength is 256 bit. Hashes are SHA-512 where applicable and SHA-256 when used as AES256 encryption keys. In the pipeline for some point is variable encryption or possibly parallel encryption, depending on whether or not I decide it’s worth the hassle. * Q: Why is there only an Opera Extension? Don’t you know that the cool kids all use Chrome/Firefox/Safari? * A: I use Opera, I’m planning to add extensions for other browsers once I’ve finalised the extension and done some refactoring * Q: How does it work? * A: The server maintains a list of URLS, Salts and “Credentials” information. The credentials information is a Base64 encoded AES256 encrypted JSON object of Key=>Value pairs. The encryption key for the credentials data is the master-key concatenated with the rowSalt. The master-key is stored with the database (keySlot0 in the User table), however it is encrypted with the SHA-256 of the password (which itself is a SHA-512 of the password the user enters). * Q: Why on earth have you made this? * A: A few weeks ago a colleague of mine recovered his password from some component of Tesco’s online services, which promptly sent his password back to him via email comprimising that password in its entirety and everywhere its used. At this point he and I began discussing: a: how atrocious the security situation appears to be on the internet, b: how poorly understood it is even by large companies, c: that the only way to limit the damage is to have totally unique passwords for each portal We then decided that its massively impractical to remember so many and yet neither of us have confidence in other password solutions, both technically (as most are closed source) and physically (to look after my data). * Q: Why not use Last Pass or one of the million alternative password storage solutions? * A: Well, yes there are hundreds of “cloud password solutions” but when I have looked at each of them they’re all commercially motivated and as such are usually closed source. There are those who will argue that closed source doesn’t necessarily mean insecure, however I prefer being able to actually check myself. Not to mention that a large centralised password repository is a massive target for potential theft. Other options I looked at all involved server-side password decryption, and I wanted something more easy to use from my browser of choice (Opera). * Q: So why not use Opera Link if you’re all about Opera? * A: I did look seriously at Opera Link, however it is closed source and descriptions of exactly how it works did not fill me with confidence, see: (http://my.opera.com/operalink/blog/2011/05/03/security-of-synchronized-passwords-with-opera-link) as the Opera company as an entity has both my data and at instances my decryption key. * Q: I need my own server?! * A: Yes, or at least access to a server running Apache & PHP on which to host the Server Component. SSL connectivity is not strictly required to keep the security of your credentials, however it is highly recommended as an unencrypted connection can sniff your URL lists (giving a potential attacker a hit-list to attack) and your login credentials (again the maximum damage that could be done with this is deleting your passwords or retrieval of your URL lists, not compromise your actual passwords). * Q: So how secure is this really? * A: I’m yet to complete a comprehensive security review of everything but at the moment I’m thinking “pretty secure”, especially if SSL is used. * Q: Is there anything wrong that you know about? * A: There are a few things I’m not totally happy with: Ideally for stored credentials (encryption key et cetera) I would prefer to salt the hash before storing it, this will probably be implemented at some point in the future with the salt stored server-side. User feedback could really do with being improved, especially in situations where passwords are incorrect. The authentication system is vulnerable to replay attacks if SSL is not used as the server does not currently keep a list of nonces (coming soon). * Q: Does it support X? * A: Probably not, but I’m looking to add features where possible. * Q: Why is everything so grey and depressing? * A: Because it’s neutral and I’d rather go with something looking drab and boring than luminous! * Q: What new features are you planning? * A: New features I want to add pretty soon are: Two factor authentication using SSL Client Certificates Alternative Browser Support Adding a non-superuser interface to the server to allow password viewing without a browser extension Possibly the ability to match both http and https in one URL * Q: How do I use domain-level matching rather than exact URL & Querystring matches? * A: Fuzzy URL matching is achieved using the sql LIKE syntax, when saving a URL either alter the URL string to include % as a wildcard or rename the URL in the credentials list screen (double click the URL) and add a % For example, Google accounts uses many different arguments depending on where you have been redirected to the login page from however they all share https://accounts.google.com/ServiceLogin as their root URL. Therefore saving credentials with the URL: https://accounts.google.com/ServiceLogin?% will allow you to retrieve them independent of the GET string. SQLite also supports the _ as a single character wildcard that is also supported. For more information see: http://www.sqlite.org/lang_expr.html#like * Q: Why on earth do my URL encoded get strings get duplicated % signs? A %20 becomes %%20 when I add them! * A: This is because the % is the wildcard character in SQL LIKE statements, therefore all occurances of the % character to be treated as a literal need to be represented as %% in the database. In the credentials list the data is displayed exactly as it is stored in the database, therefore a % is a wildcard and %% is a ‘%’ character. * Q: Why doesn’t it work with long URLs like the Amazon Web Service Login page? * A: This is more than likely due to the PHP Suhosin module’s get.max_value_length value which defaults to 256 characters, add/change your php config (/etc/php5/conf.d/suhosin.ini on Debian & Ubuntu) to include the line suhosin.get.max_value_length = 2048 and that should more than cover it. * Q: Why does it keep auto updating every 3 days even when it doesn’t need to!? * A: This is due to me not understanding how the auto-update functionality works in Opera Extensions; this was fixed in version 0.99.s Libraries and Attributions =========================== At current the following libraries are used: jquery.js: http://www.jquery.com Copyright © 2011 John Resig, http://jquery.com/ Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. sha(1|256|512)?.js: http://sourceforge.net/projects/jssha/files/ Copyright © 2008-2010, Brian Turek All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission. 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Leahy, Rafal * Kukawski, taith, Luis Salazar (http://www.freaky-media.com/), FremyCompany, * Rival, Luke Smith (http://lucassmith.name), Andrej Pavlovic, Garagoth, Le * Torbi (http://www.letorbi.de/), Dino, Josep Sanz (http://www.ws3.es/), rem, * Russell Walker (http://www.nbill.co.uk/), Jamie Beck * (http://www.terabit.ca/), setcookie, Michael, YUI Library: * http://developer.yahoo.com/yui/docs/YAHOO.util.DateLocale.html, Blues at * http://hacks.bluesmoon.info/strftime/strftime.js, Ben * (http://benblume.co.uk/), DtTvB * (http://dt.in.th/2008-09-16.string-length-in-bytes.html), Andreas, William, * meo, incidence, Cagri Ekin, Amirouche, Amir Habibi * (http://www.residence-mixte.com/), Kheang Hok Chin * (http://www.distantia.ca/), Jay Klehr, Lorenzo Pisani, Tony, Yen-Wei Liu, * Greenseed, mk.keck, Leslie Hoare, dude, booeyOH, Ben Bryan * * Dual licensed under the MIT (MIT-LICENSE.txt) * and GPL (GPL-LICENSE.txt) licenses. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * “Software”), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL KEVIN VAN ZONNEVELD BE LIABLE FOR ANY CLAIM, DAMAGES * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. / Sizzle Selector Engine: /! * Sizzle CSS Selector Engine * Copyright 2011, The Dojo Foundation * Released under the MIT, BSD, and GPL Licenses. * More information: http://sizzlejs.com/ */ AES: SlowAES: http://code.google.com/p/slowaes/ Apache version 2.0 json2.js: http://www.JSON.org/json2.js jquery.tools.min.1.2.5.js: http://flowplayer.org/tools/ REST utils: Originally http://www.gen-x-design.com/archives/create-a-rest-api-with-php/ Icons: Creative Commons 3.0: http://www.fatcow.com/free-icons GET String parameter parsing in JS: Thanks to Nathan Campos; http://stackoverflow.com/questions/901115/get-query-string-values-in-javascript handlebars.js : MIT license : http://handlebarsjs.com/ jquery-autobars: ? : https://github.com/cultofmetatron/jquery-autobars

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Password Synchronisation Server & Browser Clients Extensions ...


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